squashed: add intelli_plug by faux123

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intelli_plug: intelligent hotplug cpu driver with eco mode

Signed-off-by: faux123 <reioux@gmail.com>

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intelli_plug: tweak for faster wakeup from suspend

bump version to 1.1

Signed-off-by: faux123 <reioux@gmail.com>

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intelli_plug: increase cores on persistence

also replace hardcoded values with Macros for ease of updating later

Signed-off-by: faux123 <reioux@gmail.com>

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intelli_plug: make it gcc-4.6.x eabi compatible :p

Signed-off-by: faux123 <reioux@gmail.com>

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intelli_plug: use rq_stats to help detect artificial or constant loads

benchmarks often create fake / artificial loads at a constant rate.  These
type of loads are not detected corectly by run average algorithms. Use
the run queue stats to help detect these cases and bring up the cores in
correspondence.

bump version to 1.2

Signed-off-by: faux123 <reioux@gmail.com>

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intelli_plug: use mp_decision() algorithm for core 3 and 4

This replaces the simplistic check for run queue thresholds with a more
sophisticate algorithm with time awareness

bump version to 1.3

Signed-off-by: faux123 <reioux@gmail.com>

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intelli_plug: tweak mp_decsion parameters and remove unused logic

Signed-off-by: faux123 <reioux@gmail.com>

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intelli_plug: bump threshold slightly for better response

Signed-off-by: faux123 <reioux@gmail.com>

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intelli_plug: change logic for better benchmark performance

Signed-off-by: faux123 <reioux@gmail.com>

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intelli_plug: use mp_decision to reduce online persistence count for cores

this should bring down the cores faster when run queue is low
also optimized code a bit using local vars

Signed-off-by: faux123 <reioux@gmail.com>

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intelli_plug: slow down hotplug activity from 50ms to 200ms

this will reduce the hotplug chaos which may in turn save more power

Signed-off-by: faux123 <reioux@gmail.com>

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intelli_plug: code clean up and minor bug fixes

bump to version 1.6

Signed-off-by: Paul Reioux <reioux@gmail.com>

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intelli_plug: add dynamic load sampling rate logic

Add dynamic sampling logic based on load. If load is high and required more
than 2 cores, increase the sampling rate for a duration of 3 seconds to help
manage the load better during this time.  Once duration expires, revert back
to lazier sampling rate for better batter performance.

bump to version 1.8

Signed-off-by: Paul Reioux <reioux@gmail.com>

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intelli_plug: add touch input logic

changed intelli_plug sampling rates and bump to version 2.0

Signed-off-by: Paul Reioux <reioux@gmail.com>

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intelli_plug: use a context safe function call instead

Signed-off-by: Paul Reioux <reioux@gmail.com>

Change-Id: I6881f628cb59c53c0bd7f92fa4bdf77cd501386c
jf: disable mpdecision by default

Change-Id: I4450a160eb648651025302dd6b44d805bcece6dc
Enable CONFIG_INTELLI_PLUG

Change-Id: I71494f9c4eaf63898eecac0d8f81af10e86b5893